Electrical protection means

Details Electrical protection means Electrical protection means

1973-01-08

1976-02-03

Scott, James R.

Electric heating

Microwave heating

Tunnel furnace

317 33SC, 317 16, 219511, H01H 8300

Patent

active

039367029

ABSTRACT:
An electrical protection unit having a plurality of main leads for respectively interconnecting a plurality of lines of an electrical power source to at least one electrically operated unit. At least one main lead has a device therein for opening the respective lead when the device is activated. The one main lead has one side of an electrical circuit interconnected thereto with the other side of the circuit being adapted to be interconnected to ground, the circuit having means for activating the device when the circuit is operatively interconnected to ground. Control means are provided for operatively interconnecting the circuit to ground.

REFERENCES:
patent: 2850610 (1958-09-01), Kasuga
patent: 2930959 (1960-03-01), Slocum
patent: 3018356 (1962-01-01), Busch et al.
patent: 3086999 (1963-04-01), Kramer
patent: 3377462 (1968-04-01), Pferschy
patent: 3379859 (1968-04-01), Marriott
patent: 3493815 (1970-02-01), Hurtle

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